Gaya APA

Heifetz, R, A., Linsky, M. (2002). Leadership on the line: Staying alive through the dangers of leading ed.1 (1). Amerika: Harvard Business view Press.

Gaya MLA

Heifetz, Ronald, A.., Linsky, Marty. "Leadership on the line: Staying alive through the dangers of leading ed.1". 1 Amerika: Harvard Business view Press, 2002. Text.